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Sammamish, WA planting calendar

When to plant vegetables in Sammamish, WA (USDA hardiness zone 8b). Typical last spring frost around Mar 8, 2026 17 days year to year), first fall frost around Nov 23, 202616 days).

Playing it safe? Spring frost holds off until about Mar 29, 2026 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

Want exact dates for your address, a drag-and-drop bed layout, and reminders when it’s time to sow? Enter your ZIP:

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Still time to plant

As of today, these crops can still reach harvest before Sammamish, WA’s first frost (~Nov 23, 2026) — fastest first.

Month by month in Sammamish, WA

January

February

March

April

September

December

Understand your frost dates

Frost dates are NOAA 1991–2020 climate normals for a representative location in Sammamish, WA (covering 2 ZIPs); your exact dates depend on your address. Schedules are guidance, not guarantees.